Define the following alternative current terms: a. Peak value of voltage .b. Root mean square value of Voltag

Question

c. Resistance .d. Inductance(l) .e. Capacitance .f. inpendance .g. Reactance .h. Power factor Describe an expression for each of them well possible

Answer 1

PEAK VOLTAGE:
- The maximum instantaneous voltage. (or)
- Also called peak-to-peak voltage, it is a measure of an AC waveform of the highest peak-to-peak voltage present on the waveform.

ROOT MEAN SQUARE (RMS) VOLTAGE:
- The square root of the average of the squares of all instantaneous values of voltage during one half cycle in an AC circuit. For a sine wave, the value is approximately 0.707 times the peak value of the waveform. RMS is also called the "effective value".

RESISTANCE:
- A material's opposition to the flow of electric current; measured in ohms

INDUCTANCE:
- The property of a circuit or circuit element that opposes a change in current flow, thus causing current changes to lag behind voltage changes. It is measured in henrys.

CAPACITANCE:
- The property of a circuit or circuit element that opposes a change in voltage, thus causing current changes to lead voltage changes. It is measured in farads.

IMPEDANCE:
- The total opposition that a circuit offers to the flow of alternating current or any other varying current at a particular frequency. It is a combination of resistance R and reactance X, measured in ohms.

REACTANCE:
- The property of an electrical circuit element to resist changes in voltage or current. Like resistance, it is measured in Ohms. The reactance of a circuit changes with frequency. Reactance also alters the phase relationship between current and voltage. It applies to all time-variant signals.

POWER FACTOR:
- This is the ratio of power actually used in an electric circuit, the real power (expressed in Watts), to the power that is apparently being drawn from the power source, the apparent power (expressed in Volt-Amperes).

Answer 2

Peak Value

Answer 3

small point the conversion V(rms)= 0.707x V(pk) is only valid if the ac is a true sine wave If it aint, or of the ac has noise or high frequencies, then it should not be used (but it will give a reasonably correct value) instead the rms voltage should be read using a true rms reading meter connected to the ac.

Answer 4

Open your Physics book and look up the answers. Clearly this semester is electricity and magnetism.